Bill Clinton heads back to Arkansas Friday to try and help out a fellow Democrat battling for her political life.

(CNN) - Bill Clinton heads back to Arkansas Friday to try and help out a fellow Democrat battling for her political life.

The former president and former Arkansas governor will campaign with Sen. Blanche Lincoln at an event in downtown Little Rock.

The two-term senator will face off against Arkansas Lt. Gov. Bill Halter in a June 8 runoff election in the battle for the Democratic nomination. Lincoln won 44.5 percent of the vote in last week's Democratic Senate primary, with Halter, who's made gains with the help of union and progressive groups as he challenges Lincoln, grabbing 42.5 percent, and conservative Democrat DC Morrison at 13 percent. Since no candidate won a majority of the vote, a runoff between the top two candidates is necessary.

"I'm extremely grateful for President Clinton's support in this campaign and look forward to our 'Countdown to Victory' kickoff event," says Lincoln, in an e-mail released by her campaign.

Along with the star-power that Clinton brings to his former home state, he could also play a pivotal role in bringing out African American voters, a key constituency group that Lincoln will need to beat Halter.

"Blanche is fighting the special interests and standing up for Arkansas," states Clinton, in the same release. "She has written the toughest Wall Street reform proposal to help Main Street businesses. She has fought for Arkansas farmers, ranchers, and foresters. Arkansas cannot afford to lose Blanche's leadership as Chairman of the Senate Agriculture Committee."

Halter outraised Lincoln over the past three weeks by more than $200,000, but as of now, Lincoln has more campaign cash on hand for the final push. The most recent polling in the run-off election suggests the race is a dead heat. The winner will face off in November against Rep. John Boozman, the Republican nominee. Boozman captured over 50 percent of the vote in a crowded GOP primary field, thus avoiding a runoff.

Clinton campaigned earlier this month for Mark Critz, the Democratic candidate in last week's special House election in Pennsylvania's 12th Congressional district. Critz ended up beating Republican Tim Burns in the battle to fill the seat of the late Democratic Rep. Jack Murtha.